Active Sound Effects with Frequency Transitions for EV Launch Control
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Solution Overview
Problem
Existing active sound effect generating devices fail to provide a sense of exhilaration to drivers during launch control activation in electric vehicles, which enhances acceleration performance during vehicle startup.
Innovation Solution
An active sound effect generating device that includes a determination unit to detect launch control preparation, generating sound effects with specific frequency components to simulate engine sounds, outputting a first sound effect with a principal frequency when launch control is prepared, transitioning to higher frequencies as launch control progresses, and synthesizing harmonic and background sounds to enhance the driving experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a speaker outputs sound effects into the cabin during launch control activation, then driver exhilaration and recognition of acceleration performance are improved, but the device complexity increases due to additional determination and signal generation units
Solution Approach 1:
The determination unit and signal generating unit are integrated into the existing vehicle control system, allowing the speaker to serve dual purposes: providing standard audio information and generating launch control sound effects. This multi-functionality approach enhances driver engagement without requiring completely separate dedicated hardware systems.
Solution Approach 2:
The system changes the frequency parameters of the sound effects based on the launch control state. When launch control is detected, the signal generating unit produces sound effects with specific frequency characteristics that simulate engine sounds, creating an immersive driving experience that enhances driver recognition of acceleration performance.
2Manufacturing precision
If sound effects with specific frequency components are generated during launch control preparation, then the simulated engine sound experience is improved, but the signal generation complexity increases
Solution Approach 1:
The signal generating unit employs parameter changes by adjusting frequency components based on the launch control state. During launch control preparation, the system generates sound effects with specific frequency characteristics that simulate engine sounds, creating a realistic auditory experience that enhances driver engagement.
Solution Approach 2:
The system copies the characteristic frequency spectrum of real engine sounds and reproduces it through the speaker. By analyzing and replicating the frequency components typically associated with engine operation during launch control, the system creates a convincing simulated engine sound experience without requiring actual engine audio recording.
3Productivity
If the speaker outputs first sound effect with principal frequency component during launch control preparation, then the acceleration performance perception is enhanced, but the sound effect generation complexity increases
Solution Approach 1:
The signal generating unit utilizes parameter changes by selecting and outputting sound effects with specific frequency characteristics appropriate to the launch control phase. During preparation, the system employs lower frequency components that simulate the buildup of engine power, effectively communicating the impending acceleration to the driver.
Solution Approach 2:
The system implements periodic action by continuously monitoring the launch control state and dynamically adjusting the sound effect output. As the launch control progresses through different stages, the signal generating unit transitions between different frequency patterns, creating a rhythmic auditory narrative that mirrors the mechanical progression of the vehicle acceleration.
Data Source
AI summary
An active sound effect generating device is an active sound effect generating device that causes a speaker to output a sound effect into a cabin of a vehicle driven by a driving source, and is equipped with a signal generating unit that generates a sound effect signal, which is a signal that causes sound effects to be output to the speaker, and an output unit that outputs the sound effect signal generated by the signal generating unit to the speaker, and when it is determined that launch control is in preparation, the signal generating unit generates the sound effect signal that causes the speaker to output a first sound effect having a component of a first frequency as a principal component.